#!/bin/csh
#
# Examples for envelope 
#
# parameters are: (1) amplitude envelope string
#                 (2) input soundfile
#                 (3) output soundfile name
#

if ($1 == "") then
   set SOUNDDIR = ../
else
   set SOUNDDIR = $1
endif

if ($2 == "") then
   set BINDIR = ../../bin
else
   set BINDIR = $2
endif


rm -f $SOUNDDIR/temp.wav
$BINDIR/sinewave $SOUNDDIR/temp.wav >/dev/null <<EOT
1000
1000
0.9
0.0
EOT


# now put a triangle amplitude envelope on the sound:

echo Creating $SOUNDDIR/ampEnvelope1.wav which has a triangle envelope

rm -f $SOUNDDIR/ampEnvelope1.wav
$BINDIR/envelope "(0,0 ; 1,1; 2,0)" $SOUNDDIR/temp.wav \
   $SOUNDDIR/ampEnvelope1.wav >/dev/null


echo Creating $SOUNDDIR/ampEnvelope2.wav which has a geometric envelope

rm -f $SOUNDDIR/ampEnvelope2.wav
$BINDIR/envelope "g(0,0.0001 ; 1,1; 2,0.0001)" $SOUNDDIR/temp.wav \
   $SOUNDDIR/ampEnvelope2.wav >/dev/null


# now create a 1000 sample ramp up and down at beginning of soundfile
# using stick point


echo Creating $SOUNDDIR/ampEnvelope3.wav which has a ramp envelope

rm -f $SOUNDDIR/ampEnvelope3.wav
$BINDIR/envelope "(0,0 ; 1000,1; s; 2000,0)" $SOUNDDIR/temp.wav \
   $SOUNDDIR/ampEnvelope3.wav >/dev/null